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Cited by 389

The DOI matches its Crossref record; 23 of the 23 references it cites were found in a registry or an index.

Restoring Cystic Fibrosis Transmembrane Conductance Regulator Function Reduces Airway Bacteria and Inflammation in People with Cystic Fibrosis and Chronic Lung Infections

Open access
Hisert, Katherine B., Heltshe, Sonya L., Pope, Christopher, Jorth, Peter, Wu, Xia, Edwards, Rachael M., Radey, Matthew, Accurso, Frank J., Wolter, Daniel J., Cooke, Gordon, Adam, Ryan J., Carter, Suzanne, Grogan, Brenda, Launspach, Janice L., Donnelly, Seamas C., Gallagher, Charles G., Bruce, James E., Stoltz, David A., Welsh, Michael J., Hoffman, Lucas R., McKone, Edward F., Singh, Pradeep K.·2017·American Journal of Respiratory and Critical Care Medicine

Abstract

RATIONALE: Previous work indicates that ivacaftor improves cystic fibrosis transmembrane conductance regulator (CFTR) activity and lung function in people with cystic fibrosis and G551D-CFTR mutations but does not reduce density of bacteria or markers of inflammation in the airway. These findings raise the possibility that infection and inflammation may progress independently of CFTR activity once cystic fibrosis lung disease is established. OBJECTIVES: To better understand the relationship between CFTR activity, airway microbiology and inflammation, and lung function in subjects with cystic fibrosis and chronic airway infections. METHODS: We studied 12 subjects with G551D-CFTR mutations and chronic airway infections before and after ivacaftor. We measured lung function, sputum bacterial content, and inflammation, and obtained chest computed tomography scans. MEASUREMENTS AND MAIN RESULTS: Ivacaftor produced rapid decreases in sputum Pseudomonas aeruginosa density that began within 48 hours and continued in the first year of treatment. However, no subject eradicated their infecting P. aeruginosa strain, and after the first year P. aeruginosa densities rebounded. Sputum total bacterial concentrations also decreased, but less than P. aeruginosa. Sputum inflammatory measures decreased significantly in the first week of treatment and continued to decline over 2 years. Computed tomography scans obtained before and 1 year after ivacaftor treatment revealed that ivacaftor decreased airway mucous plugging. CONCLUSIONS: Ivacaftor caused marked reductions in sputum P. aeruginosa density and airway inflammation and produced modest improvements in radiographic lung disease in subjects with G551D-CFTR mutations. However, P. aeruginosa airway infection persisted. Thus, measures that control infection may be required to realize the full benefits of CFTR-targeting treatments.

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Metadata

Authors
Hisert, K. B., Heltshe, S. L., Pope, C., Jorth, P., Wu, X., Edwards, R. M., Radey, M., Accurso, F. J., Wolter, D. J., Cooke, G., Adam, R. J., Carter, S., Grogan, B., Launspach, J. L., Donnelly, S. C., Gallagher, C. G., Bruce, J. E., Stoltz, D. A., Welsh, M. J., Hoffman, L. R., McKone, E. F., & Singh, P. K.
Venue
American Journal of Respiratory and Critical Care Medicine
Published
2017-06-15
Volume
195
Issue
12
Pages
1617-1628
ISSN
  • 1073-449X (ISSN-L)
  • 1535-4970
OpenAlex
W2589766919
Cited by
389
References
23
FWCI
24.70
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Restoring Cystic Fibrosis Transmembrane Conductance Regulator Function Reduces Airway Bacteria and Inflammation in People with Cystic Fibrosis and Chronic Lung Infections. https://app.cochat.ai/papers/10.1164/rccm.201609-1954oc
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Hisert, K. B., Heltshe, S. L., Pope, C., Jorth, P., Wu, X., Edwards, R. M., Radey, M., Accurso, F. J., Wolter, D. J., Cooke, G., Adam, R. J., Carter, S., Grogan, B., Launspach, J. L., Donnelly, S. C., Gallagher, C. G., Bruce, J. E., Stoltz, D. A., Welsh, M. J., . . . Singh, P. K. (2017). Restoring Cystic Fibrosis Transmembrane Conductance Regulator Function Reduces Airway Bacteria and Inflammation in People with Cystic Fibrosis and Chronic Lung Infections. American Journal of Respiratory and Critical Care Medicine. https://doi.org/10.1164/rccm.201609-1954oc

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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